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cond-mat.mtrl-sci2025
Multiscale Magnetic Correlations in La2Mn2-xNixO6: Role of Crystal Structure in Double Perovskites
A. K. Bera, K. S. Chikara, B. Saha +3
The magnetic correlations in double perovskites La2Mn2-xNixO6 (x = 0.5, 0.75, 1.0, 1.25 and 1.5) have been systematically investigated across macroscopic, mesoscopic, and microscop…
cond-mat.str-el2025★ 1 cited
Magnetic Ground State and Spin Excitations in the 2D Trimerized Collinear-II Lattice Antiferromagnet Li2Ni3P4O14
K. S. Chikara, A. K. Bera, A. Kumar +3
We report the magnetic ground state, spin excitations, and spin Hamiltonian of the 2D spin-1 trimerized Heisenberg antiferromagnet Li2Ni3P4O14. Below the magnetic ordering temperat…
cond-mat.str-el2025
Fermionic Band Dispersions and an Evidence of Cooperon Excitations in a Spin- Trimer Chain
P. Srikanth Patnaik, Snehasish Sen, A. K. Bera +3
We obtain the solution of the Hamiltonian of an antiferromagnetically coupled spin- trimer chain in terms of three bands that host three different species of fermions. While t…